Createprocess windows

COM must include the. COM extension. The calling thread can use the WaitForInputIdle function to wait until the new process has finished its initialization and is waiting for user input with no input pending. This can be useful for synchronization between parent and child processes, because CreateProcess returns without waiting for the new process to finish its initialization.

For example, the creating process would use WaitForInputIdle before trying to find a window associated with the new process. The preferred way to shut down a process is by using the ExitProcess function, because this function notifies all dynamic-link libraries DLLs attached to the process of the approaching termination.

Other means of shutting down a process do not notify the attached DLLs. Note that when a thread calls ExitProcess , other threads of the process are terminated without an opportunity to execute any additional code including the thread termination code of attached DLLs. ExitProcess , ExitThread , CreateThread , CreateRemoteThread , and a process that is starting as the result of a call by CreateProcess are serialized between each other within a process.

Only one of these events can happen in an address space at a time. This means the following restrictions hold: During process startup and DLL initialization routines, new threads can be created, but they do not begin execution until DLL initialization is done for the process.

Only one thread in a process can be in a DLL initialization or detach routine at a time. The ExitProcess function does not return until no threads are in their DLL initialization or detach routines.

The created process remains in the system until all threads within the process have terminated and all handles to the process and any of its threads have been closed through calls to CloseHandle. The handles for both the process and the main thread must be closed through calls to CloseHandle.

If these handles are not needed, it is best to close them immediately after the process is created. When the last thread in a process terminates, the following events occur: All objects opened by the process are implicitly closed.

The thread object of the main thread is set to the signaled state, satisfying any threads that were waiting on the object. The process object is set to the signaled state, satisfying any threads that were waiting on the object. As noted in the previous description of lpEnvironment , such current directory information for a system's drives does not automatically propagate to a new process when the CreateProcess function's lpEnvironment parameter is non-NULL.

An application must manually pass the current directory information to the new process. Typically, they will go at the front of the environment block, due to the previously mentioned environment block sorting. That avoids an application having to scan the environment block. The current directory specified by the lpcurrentDirectory parameter is the current directory for the child process. The current directory specified in item 2 under the lpCommandLine parameter is the current directory for the parent process.

The execution module cannot be specified in the command line string. For Windows CE version 2. Windows NT: Requires version 3. Windows: Requires Windows 95 or later. Windows CE: Requires version 1. Header: Declared in winbase. Import Library: Use kernel File: runonce. Example 4. File: CommonAppUtils. Example 5. The process handle and pipe handles are returned in the info struct. Returns the PID of the new process, or -1 on error. Example 6. File: poc2. Example 7.

File: pgnuplot. This should separate the program name from the arguments. ProcessAlive piProcInfo. Example 8. File: nsDebugImpl. Example 9. File: NppShell. Example Viewed k times. Properly closes all the handles when the executable finishes. Add a comment. Active Oldest Votes. You should close the thread handle immediately, if you're not going to use it. Not a big problem here, though. Why should I close it immediately?

You're missing a ; after the WaitForSingleObject call. Show 4 more comments. WaitForSingleObject pi. CloseHandle pi. No, that's not how you combine a message loop and a wait.

Mike Ellery Mike Ellery 1, 2 2 gold badges 20 20 silver badges 28 28 bronze badges. Andy Andy TerminateProcess pi. MSDN is great, and I have tried a few times to make sense of the comments section below createprocess, but many of the comments that might help me out have gone unanswered themselves. It's the reverse of the pointer dereference operator. Aug 8, at am UTC. Now I understand almost all of it!

Thank you so much for the help! I have one more question pertaining to the terminateProcess function, but I can mark this thread as answered immediately if it is better to open up another thread with this question. I tried TerminateProcess as well, but haven't had much luck. I think it has something to do with the handle?

Or exit code. Looks like it is the exitcode causing the issue. I just added a check to see if the exit code variable was returning a zero, and it was. What might be the cause? Last edited on Aug 8, at am UTC. You have to enable the right privilages before TerminateProcess will work.

If you check the error code, it should access denied. And it can't handle the popup that Notepad will display if it text is dirty. Aug 8, at pm UTC. Andy P. Each GUI thread will be running a message pump. Then, if the app doesn't close in a timely manner, I use TerminateProcess.